http://www.theguardian.com/politics/2016/jun/15/brexit-how-a-fringe-idea-took-hold-tory-party http://www.theguardian.com/politics/2016/jun/15/brexit-how-a... is

http://www.theguardian.com/politics/2016/jun/15/brexit-how-a-fringe-idea-took-hold-tory-party http://www.theguardian.com/politics/2016/jun/15/brexit-how-a... is a good background article.